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NHTSA vehicle safety data

1999 Monaco Coach Diplomat Recalls & Complaints

The 1999 Monaco Coach Diplomat has 3 NHTSA recall campaigns and 10 owner complaints on file as of November 3, 2026. Recall repairs are usually free at an authorized Monaco Coach dealer.

NHTSA recall and complaint data for the 1999 Monaco Coach Diplomat. Recall data is refreshed daily from NHTSA.

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1999 Monaco Coach Diplomat owner complaints

Owners have filed 10 complaints with NHTSA about the 1999 Monaco Coach Diplomat, describing incidents dated January 1, 1999 to February 28, 2009.

Most-cited components

  • Fuel/Propulsion System 2 complaints
  • Service Brakes 2 complaints
  • Tires 2 complaints
  • Visibility/Wiper 2 complaints
  • Equipment 1 complaint
  • Power Train 1 complaint

Newest complaints

  • ODI #10279879 · Filed

    TL*THE CONTACT OWNS A 1999 MONACO COACH DIPLOMAT RV. THE CONTACT STATED THAT THE RV HAS A FUNGUS INFECTION NAMED COPRINUS BASIDIOMYCETES MOLD, WHICH IS DETRIMENTAL TO HIS HEALTH. THE MOLD HAS INFECTED THE ENTIRE RV AND HAS CIRCULATED IN THE AIR AND THE CARPET. AN EXPERT INSPECTED THE VEHICLE AND…

  • ODI #10053543 · Filed

    RECALL RECEIVED FOR THE WRONG PSI ON THE ORIGINAL TAG FOR TIRE EQUIPMENT/ VEHICLE SUFFERED TIRE BLOWOUT.*MR THE CONSUMER RECEIVED RECALL 03V386000 WHICH INDICATED THAT THE WRONG PSI WAS PUT ON THE ORIGINAL ID TAG. THE CONSUMER CONTACTED THE LOCAL DEALER BUT THEY REFUSED TO HANDLE THE RECALL BECAUSE…

  • ODI #10033879 · Filed

    WHILE DRIVING 65 MPH, THE AIR DRYER ON THE AIR BRAKES HAD BLOWN APART WHICH CAUSED THE BRAKES TO LOSE POWER. THE DRIVER WAS ABLE TO AVOID A COLLISION AND THE MOTOR HOME WAS TOWED TO THE RESIDENCE. *AK *SCC *JB

Read all 10 complaints

REFRIGERATOR/FIRE/NORCOLD

NHTSA #08V257000 · Equipment — Recreational Vehicle/Trailer · NHTSA notice

Reported June 5, 2008 · MONACO COACH CORPORATION

Potentially affected: 8,587 vehicles

Monaco Coach campaign R08017 · Owners notified August 29, 2008 · Vehicles built November 17, 1997 – July 15, 2002 (per NHTSA)

Defect description

MONACO IS RECALLING CERTAIN MOTOR HOMES EQUIPPED WITH NORCOLD REFRIGERATORS. A FATIGUE FAILURE IN THE SECTION OF THE COOLING UNIT WHICH CONTAINS THE REFRIGERANT COULD ALLOW THE LIQUID SOLUTION TO SLOWLY LEAK.

Safety consequence

EXTENDED OPERATION OF A LEAKING COOLING UNIT COULD LEAD TO A FIRE FROM GAS WHICH MIGHT ESCAPE.

Manufacturer remedy

MONACO IS WORKING WITH NORCOLD TO REPAIR THESE REFRIGERATORS. NORCOLD WILL PROVIDE THERMAL SWITCH KITS TO OWNERS ALONG WITH THE NECESSARY FORMS AND INSTRUCTIONS. THE RECALL BEGAN ON AUGUST 29, 2008. OWNERS MAY CONTACT NORCOLD AT 1-800-767-9101 OR MONACO AT 1-800-685-6545.

Notes

MONACO RECALL NO. 08017.CUSTOMERS MAY CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S VEHICLE SAFETY HOTLINE AT 1-888-327-4236 (TTY: 1-800-424-9153); OR GO TO HTTP://WWW.SAFERCAR.GOV.

MONACO/PART 567/CERTIFICATION LABEL

NHTSA #03V386000 · Equipment — Other — Labels · NHTSA notice

Reported October 10, 2003 · MONACO COACH CORP.

Potentially affected: 888 vehicles

Monaco Coach campaign R03037 · Owners notified October 24, 2003 · Vehicles built June 15, 1998 – June 7, 1999 (per NHTSA)

Defect description

ON CERTAIN MOTOR HOMES, THE FEDERAL IDENTIFICATION TAG ON BOTH 36' AND 38' MODELS WAS INCORRECT. THE INITIAL TAG SHOWS THE PSI AS 90 LBS. FRONT AND 100 LBS. REAR. THE CORRECT PSI IS 105 FRONT AND 115 REAR. ALSO, THE FEDERAL IDENTIFICATION TAG ON CERTAIN UNITS INCORRECTLY STATES THAT THE UNIT WAS BUILT WITH A TAG AXLE.

Safety consequence

DRIVING THE MOTOR HOME WITH UNDER/OVER INFLATED TIRES CAN CAUSE OR CONTRIBUTE TO PREMATURE TIRE FAILURE, POSSIBLY RESULTING IN A SUDDEN BLOWOUT OR OTHER FAILURE THAT COULD RESULT IN THE LOSS OF CONTROL OF THE MOTOR HOME.

Manufacturer remedy

OWNERS WILL BE PROVIDED WITH A CORRECT FEDERAL IDENTIFICATION TAG AND INSTALLATION INSTRUCTIONS. OWNER NOTIFICATION BEGAN OCTOBER 24, 2003. OWNERS SHOULD CONTACT MONACO AT 1-800-685-6545.

Notes

MONACO RECALL NO. R03037.CUSTOMERS CAN ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S AUTO SAFETY HOTLINE AT 1-888-DASH-2-DOT (1-888-327-4236).

MONACO/REFRIGERATOR COOLING UNIT FIRE

NHTSA #03V166000 · Equipment — Recreational Vehicle/Trailer · NHTSA notice

Reported May 8, 2003 · MONACO COACH CORP.

Defect description

ON CERTAIN MOTORHOMES, FIFTH WHEELS AND TRAVEL TRAILERS EQUIPPED WITH NORCOLD REFRIGERATOR COOLING UNITS MODEL NUMBERS 1200LR AND 1200RIM, THESE REFRIGERATORS CAN EXPERIENCE LOW CYCLE FATIGUE FAILURE WHICH CAN LEAD TO THE LIQUID SOLUTION SLOWLY LEAKING FROM THE SEALED, PRESSURIZED COOLING UNIT THROUGH A SMALL CRACK.

Safety consequence

IF A LEAK OCCURS AND THE UNIT IS CONTINUALLY OPERATED, HYDROGEN GAS MAY BE EXPELLED AND CAN BE IGNITED, RESULTING IN A FIRE, POSSIBLY CAUSING SERIOUS INJURY OR DEATH.

Manufacturer remedy

NORCOLD WILL NOTIFY ITS CUSTOMERS AND PROVIDE A REPLACEMENT COOLING UNIT FREE OF CHARGE. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT NORCOLD SERVICE CENTER AT 1-800-667-3005 OR MONACO AT 574-862-7211.

Notes

ALSO, CUSTOMERS CAN CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S AUTO SAFETY HOTLINE AT 1-888-DASH-2-DOT (1-888-327-4236).

Other Monaco Coach Diplomat model years

Check your 1999 Monaco Coach Diplomat VIN

Not every recall applies to every VIN in a given year. Enter the 17-character VIN from your Monaco Coach Diplomat at nhtsa.gov/recalls to see whether your specific vehicle has an unrepaired recall.

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